Answer:
a) Measure of supplement of 129 deg. = 51 deg.
b) Measure of complement of 43 deg. = 47 deg.
Explanation:
a) A pair of supplementary angles is pairs of angles that measure up to 180 deg.
Let the measure of the unknown supplement be 'x'
⇒129+x=180
⇒x=180-129=51.
b) A pair of complement angles is a pair that measure to 90 deg. when added.
Let the unknown angle be 'x'
⇒ 43+x=90
⇒x=90-43=47
